Exploring Adding and Subtracting Rational Expressions

This video tutorial covers basic statistical concepts including mean, median, mode, and extremes. It explains how to calculate these measures and introduces quartiles and interquartile range. The video also demonstrates how to interpret box and whisker plots, stem-and-leaf plots, and histograms for data analysis.

What is the median of a dataset?

• The average of all values

• The most frequently occurring value

• The middle value when data is ordered

• The difference between the highest and lowest values

What is the upper quartile (Q3) in a dataset?

• The median of the upper half of the dataset

• The smallest value in the dataset

• The median of the lower half of the dataset

• The largest value in the dataset

In a box and whisker plot, what does the box represent?

• Range of the dataset

• Mode of the dataset

• Interquartile range of the dataset

• Total spread of the dataset

What does the range of a dataset represent?

• The middle value of the dataset

• The average of all values

• The sum of all values

• The difference between the maximum and minimum values

Which plot has a lesser range, A or B?

• Cannot be determined from the information given

• Both have the same range

• Plot A

• Plot B

What percentage of data in plot B is between 60 and 85?

• 25%

• 50%

• 100%

• 75%

What is the highest score in the stem-and-leaf plot?

• 70

• 74

• 96

• 52

How many students scored at least a 71 on the test according to the histogram?

• 12

• 26

• 33

• 6

How many movies grossed at least $141 million?

• 10

• 12

• 19

• 5

Can you determine the exact number of movies that grossed between $101 and $140 million from the histogram?

• It depends on the movie genre

• Only if additional data is provided

• No

• Yes